Science and Technology of Energetic Materials

Vol.67, No.5 (2006)

Research paper

Overdriven detonation in high density explosives containing tungsten powder
Hisaatsu Kato, Kenji Murata, Toru Hamada, Shigeru Itoh, and Yukio Kato


Detonation velocity and pressure of high density explosives containing tungsten powder (tungsten concentration 20, 40 and 60 wt.%) were measured and compared with calculated values obtained by KHT e.o.s. Formation of the overdriven detonation was studied using co-axial double layer cylindrical charge composed of outer high velocity explosive and inner low velocity explosive. High density explosive containing tungsten powder was used as inner low velocity explosive. The results of experiments and numerical simulations showed the formation of quasi-steady overdriven detonation by Mach reflection of conical incident detonation. Measured and calculated pressure of the overdriven detonation was more than two times higher than CJ pressure.


Overdriven detonation, High density explosive, Numerical simulation, Double layer cylindrical charge, Tungsten powder

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